Distributer for refrigerators.



PATENTED APR. 30, 1907.

W. WOLF.

DISTRIBUTER FOR REFRIGERATORS.

APPLICATION FILED DEO.4, 1906.

Witnesses.

W M W UNITED srarns PATENT @FFIQE.

-DISTRiBUTER FOR REFRIGERATOFRS.

Specification of Letters Patent.

Application filed December 4, 1906. Serial No. 346,311.

Patented April 30, 1907.

To all whom it may concern.-

Be it kno wn that I, WILHELM WOLF, a subject of the King of Prussia, residing at Reisholz, near. Dusseldorf, in the Kingdom of Prussia, have invented certain new and useful Improvements in Distributers for Refrigerators, of which the following is a specification.

My present invention relates to a distributer for fluids (liquid or gas) in refrigerators,

being principally used for distributing liquids in machines operating with ammonia.

In refrigerators the pipes in which the liquid circulates, in order. to produce evaporation are subjected to diiferent stresses, forwhich reason the efliciency of the refrigerator is unfavorably affected. Attempts have been made to obtain a uniform distribution by only charging the distributing pipes for a time. The apparatus heretofore used for this purpose have however the drawback that all the pipe ends or openings are controlled by a single valve or other opening or closing agent, so that, after the machine, is constructed, the conditions resulting are rendered permanent and the order in which the various pipes are opened cannot be subsequently altered. In such apparatus heretofore used it was also not possible to automatically regulate the entrance of the li uid into the pipes independent of the suction force of the temperature .in the suction main of the compressor or in the vaporizer. According to my present invention the separate pipe openings of such a liquid controlling apparatus are opened in any desired manner and sequence, the valve or closing device for the pipe'openings not being common to all the pipes, so that the latter are not directly dependent upon each other and canbe opened independently. Further my invention consists in rendering the ad justment de endent upon the temperature or variations 0 pressure in the vaporizer or suction main of the compressor. In order, to obtain. this end with the ordinary means it is necessary to construct the driving mechanism for the closing devices of the pipes in such a manner that they canbeeasily moved 1 in certain directions, these movements being utilized in eflecting the regulation in the above sense. i

In the accompanying drawing several forms of the liquid distributer are shown, Figure 1 being. a longitudinal section of the arrangement with six ipes; Fig. 2 is a cross section, Fig. 3 is a simi ar section showing-another form of ithe valve for closing the pipes. Fig. 4 is a detail plan view of a plate for attaching the pipes and Figs. 5, 6 and 7 show the manner of operation, and form, of the valve operating cams.

1 designates the casing of the distributer,

into which the liquid or gas can be admitted through the cock 2. 'At the bottom of this casing the distributing pipes 8 are connected, by any suitable means preferably by coupling plates (1, Fig. 4, having a threaded aperture a into which the pipe is screwed and lateral bolt-holes a by means of which the late may be screwed onto the casing.- hese pipes are normally closed by the conical lift valves 6, which are provided with guiding extensions 4 which move in suitable bores in. the topof the casing. The lugs 3 enable the va ves to be removed and t he springs 5 to be inserted, by which latter the valves are normally pressed on their seats. In the casing 1 is provided a horizontal s indle 16 hav-' ing lugs 7 in different relatlve ositions. This spindle is rotated by the whee 9 which is driven in anfy desired manner from any rotating part 0 the distributer, so that the cams 7 are moved under the guides 4 one after the other and the valves thus raised. The liquid enters in corresponding order into the pipes 8.

In .Fig. 3 another form of the valve -is shown. Instead of the conical lift valves 6 plate springs 15 are used to close the pipes 8. One end of each of these springs covers the end of a pipe while the other end of said spring is attached to the casing. These plate springs are also operated by cams arranged under the same. Fig. 1 also shows how the stroke or time of o ening of the separate valves can be altered according to thetemperature or variations of ressure in the vaporizeror suction main of t e compressor.

13 designates the suction main by way of example, in which a regulator 10 is rovided. Said regulator has a piston 11 w ich can move up-and down in the cylinder. If the pressure in the suction main decreases the piston is raised by a spring while on the pressure increasing the piston is moved down and the spring is compressed. This movement of the piston is transferred by the lever 14 provided with a forked arm to the spindle 16, so that the latter is moved to the right when the pressure in the suction main sinks and the piston rises and to the left when the pressure in the suction main is increased. The

effect of this horizontal movement of the spindle 16 on the stroke of the valves is evi- 1 dent from Figs. 5, 6 and 7. Figs. 5 and 6 show how the cams 7 engages with the circular bottom of the cylinder 4. If the cam is moved laterally, as shown in Fig. 6, it remains in contact with the circular bottom for a shorter time. The valve will accordingly be raised to a smaller extent and will close' sooner. This operation of the cams may be assisted by suitably shaping their ends.

how weights 12 may be adopted to differently load the piston 11 so that a very wide range of regulation is afiorded.

The new device can of course be modified in various ways. Under some circumstances it maybe preferable to use another form of valve. Two or more valves'may if desired be united to a grou and raised together, the

essential feature eing that the separate valves'or the like of groups of valves or the like are, and can be moved independent of each other. Further the manner of regulat ing the operation of the valves according to the temperature or variation of pressure in the vaporizer or suction main can be carried out by other means than those shown in the drawing, although a piston subject to the pres sure of the gas may be regarded as the most practical means for the purpose. Instead of the rods etc, used to transfer the motion of the piston 11 to the spindle 16 any other suitable means may be adopted.

What I claim and desire to'secure by Letters Patent of the United States is 1. In a device of the character described, the combinationwith a plurality of distributing pipes, means to close the latter, means to operate the closing means independently of each other, and means to change the'normal relation between the closing means and the means to operate the latter. a

2. In a device of the character described, the combination with a plurality of distributing pipes, means to normally close the latter, means to operate the closing means independently of each other and means to automatically change the normal relation between the closing'means and the means to operatev the latter.

3. In a device of the character described, the. combination with a plurality of distributing pipes, valves normally closing the lat-, ter, means to open said valves independently of each other, a suction main, and mechanism operated by the variation of pressure therein to change the normal relation between the valves and their opening means.

4. In a device of the character described,

the combination of a plurality of distributing pipes, valves normally closing the latter, a plurality of operating members for said valves, in different positions relative to the latter and means to change the normal relation between the valves and the operating members.

5. In a device of the character described, the combination of a plurality of distributing pipes, valves normally closing the latter, an operating member for each valve, means to control the operating members, and means to shift the controlling means.

'6. In a device of the character described, the combination of a plurality of distributing pipes, valves normally closing the latter, an operating member for each valve, means to control the operating members, and means to automatically shift the controlling me ans.

7. In a device of the character described, the combination of a plurality of distributing pipes, valves normally closing thelatter, an operating member for eachvalve, means to control the operating members, and pressure operated mechanism adapted to change.

the normal relation between the valves and the operating members; 1

8. In a device of the character described, the combination of a plurality of distributing pipes, valves normally closing the latter, a spindle proximate to the valves, cams on the spindle in diiierent relative positions and means to move the spindle longitudinally for the purpose specified. Y

9. In a device of the character described, the combination of a plurality of distributing pipes, Valves normally closing the latter, a spindle proximate to the valves, cams on the spindle in dill'erent relative positions and pressure operated mechanism to move the- 1spindle longitudinally for the purpose speci- 'ed. Y Y 10. In a device of the character described, the combination of a plurality of distributing pipes, valves normally closing the latter, a spindle proximate the valves, means to rotate the spindle, cams on the spindle adapted to open the valves in sequence, pressureoperatcd mechanism to move the spindle longirootudinally, and means to adjust the pressure operated mechanism.

11. In a devlce'oi the character described,

the combination of a plurality of distributing pipes, valves to normally close the latter,

a spindle proximate the valves, cams on the spindle indifferent relative positions, a suction mam, a cylinder 1n the latter, a piston in the cylinder, and meansconnectmg the. piston and spindle.

12. In 'a .device of the character described,

the combination with a casing,f-a plurality of distributing pipes "communicating there? with, and HM ependentvalves adapted'to close the pipes, guides on the valves, springs In testimony whereof I aflix my signature in the guides to normally seat the valves, a to this specification in the presence of two [0 spindle roltlatablydlmointeddin the casing, witnesses.

cams on t e spin e a apte to engage t e guides, a suction main, a cylinder in the lat- H M F 'ter, a piston in the cylinder and mechanism. Witnesses:

operated by the cylinder to longitudinally M. ENGELS,

move the spindle. ALFRED POHLMEYER. 

